Why does Blender say “Python script failed, check the message in the system console” when trying to import a Blender Python file from SynthEyes?
It's for version 2.49b or before.
If the script is trying to import Blender assume it is written for Blender version 2.49 and before.
Script will need to be upgraded (or search for upgraded version)  using  bpy for later version.